Advanced Test Cases for SQL Injection in SignUp and Login Pages

SQL Injection is a critical security vulnerability that can wreak havoc on web applications. As advanced Software Testers and Quality Assurance (QA) Engineers, it's our mission to create comprehensive test cases to fortify the defenses against SQL Injection in both SignUp and Login pages.

Let's delve into some advanced test scenarios and spice things up! 🛡️

Test Case 1: 🛡️ Extreme SQL Injection Testing

Test Objective: To evaluate the application's resilience against extreme SQL Injection attempts.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a notorious payload like:'; DROP TABLE users--admin';--
3. Attempt to submit the form.

Expected Result: The application should block these malicious attempts and remain unaffected, displaying an error message if necessary.

Test Case 2: 🎭 Polyglot SQL Injection

Test Objective: Uncover vulnerabilities caused by Polyglot SQL Injection.

Test Steps:

1. On the Login page, enter valid credentials.
2. In the "Username" field, input a Polyglot payload:%' OR '1'='1'; --"; (SELECT @@version); --
3. Attempt to log in.

Expected Result: The application should reject the Polyglot SQL Injection attempts and maintain its integrity.

Test Case 3: 🕵️ Blind SQL Injection with Time-Based Delay

Test Objective: Detect Time-Based Blind SQL Injection vulnerabilities in the SignUp page.

Test Steps:

1. Sign up with valid credentials.
2. In the "Full Name" field, input a Time-Based Blind Injection payload:' OR IF(1=1, SLEEP(5), 0)--' OR IF(1=2, SLEEP(5), 0)--
3. Attempt to sign up.

Expected Result: The application should not delay significantly for legitimate input and must reject Time-Based Blind SQL Injection payloads.

Test Case 4: 🕶️ Log Tampering with Null Bytes

Test Objective: Unearth vulnerabilities related to Log Tampering using Null Bytes.

Test Steps:

1. Log in with valid credentials.
2. In the "Username" field, input a Null Byte payload:admin%00'; EXEC xp_cmdshell('nslookup example.com')--
3. Attempt to log in.

Expected Result: The application should sanitize input to block Null Bytes and prevent log tampering.

Test Case 5: 📊 Performance Under Load

Test Objective: Evaluate the application's performance under a high load of SQL Injection attempts.

Test Steps:

1. Utilize a load testing tool to simulate thousands of concurrent SQL Injection requests on both SignUp and Login pages.
2. Monitor server response times, database performance, and any errors that may arise during the testing.

Expected Result: The application should remain stable, responsive, and resilient, even under heavy SQL Injection attempts.

Test Case 6: 🌐 UNION-based SQL Injection in SignUp

Test Objective: Check if the application is susceptible to UNION-based SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a UNION-based payload to retrieve data from the database:John' UNION SELECT username, password FROM users--
3. Attempt to sign up.

Expected Result: The application should block the UNION-based SQL Injection attempt and not allow unauthorized data retrieval.

Test Case 7: 📚 Error-Based SQL Injection in Login

Test Objective: Determine if the application leaks error messages that could reveal sensitive information during a Login attempt.

Test Steps:

1. On the Login page, enter a legitimate username.
2. In the "Password" field, input an error-based payload:' OR 1=CONVERT(int, (SELECT @@version))--
3. Attempt to log in.

Expected Result: The application should handle the SQL Injection payload gracefully, without exposing sensitive error messages.

Test Case 8: 🔗 Blind SQL Injection in SignUp

Test Objective: Detect vulnerabilities related to Blind SQL Injection in the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, input a Blind SQL Injection payload to check if the application responds differently for true and false conditions:' OR IF(1=1, 'Success', 'Failure')--' OR IF(1=2, 'Success', 'Failure')--
3. Attempt to sign up.

Expected Result: The application should handle Blind SQL Injection securely, without revealing differential behavior.

Test Case 9: 🚪 Login Brute-Force Protection

Test Objective: Check if the application has implemented login brute-force protection to defend against SQL Injection attempts.

Test Steps:

1. On the Login page, enter a valid username.
2. In the "Password" field, input a SQL Injection payload, such as ' OR '1'='1'--.
3. Repeatedly submit the form with invalid passwords more than the allowed threshold.
4. Observe if the application locks out or delays login attempts.

Expected Result: The application should detect brute-force attempts and take appropriate action, such as locking out users or imposing a delay.

Test Case 10: 🧩 Second-Order SQL Injection in SignUp

Test Objective: Explore Second-Order SQL Injection by injecting malicious data during SignUp and then attempting to exploit it during Login.

Test Steps:

1. During SignUp, input a username John'; -- and valid password.
2. Complete SignUp.
3. On the Login page, try logging in with the injected username from step 1.
4. Observe if the application executes SQL Injection during the Login attempt.

Expected Result: The application should properly sanitize and validate input, preventing Second-Order SQL Injection during the Login attempt.

Test Case 11: 🕳️ Deep SQL Nesting in SignUp (Extended)

Test Objective: Check if the application can handle deeply nested SQL queries to identify vulnerabilities in the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a deeply nested SQL payload:' AND 1=1 UNION ALL SELECT 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100--' UNION ALL SELECT 1, 'Admin', 'Password', 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100--
3. Attempt to sign up.

Expected Result: The application should prevent the execution of deeply nested SQL queries and maintain its integrity.

Test Case 12: 📂 File Inclusion via SQL Injection

Test Objective: Investigate if the application is susceptible to file inclusion via SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, attempt to include a remote file through SQL Injection:John' UNION ALL SELECT 1, 2, 3, 4, 5, LOAD_FILE('/etc/passwd'), 7, 8, 9, 10, 11, 12, 13, 14, 15--
3. Attempt to sign up.

Expected Result: The application should block attempts to include remote files via SQL Injection and should not execute the malicious query.

Test Case 13: ⏲️ Time-Based Blind SQL Injection in SignUp

Test Objective: Detect vulnerabilities related to Time-Based Blind SQL Injection in the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, input a Time-Based Blind Injection payload to check if the application delays responses based on true and false conditions:' OR IF(1=1, SLEEP(5), 0)--' OR IF(1=2, SLEEP(5), 0)--
3. Attempt to sign up.

Expected Result: The application should not experience significant delays for legitimate input and should reject Time-Based Blind SQL Injection payloads.

Test Case 14: 💡 Error-Based SQL Injection in SignUp

Test Objective: Determine if the application leaks error messages that could reveal sensitive information during SignUp.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, input an error-based SQL Injection payload to provoke an error message:' AND 1=CONVERT(int, (SELECT @@version))--
3. Attempt to sign up.

Expected Result: The application should handle the SQL Injection payload gracefully, without exposing sensitive error messages.

Test Case 15: 🚧 Bypassing Authentication via SQL Injection

Test Objective: Check if it's possible to bypass authentication using SQL Injection on the Login page.

Test Steps:

1. On the Login page, enter a legitimate username.
2. In the "Password" field, attempt to bypass authentication using SQL Injection:' OR '1'='1'--admin' --

Expected Result: The application should not allow unauthorized access through SQL Injection and should require valid credentials for login.

Test Case 16: 📝 Comment-Based SQL Injection in SignUp

Test Objective: Identify vulnerabilities related to Comment-Based SQL Injection in the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a Comment-Based SQL Injection payload:John' --' OR 1=1 --

Expected Result: The application should handle Comment-Based SQL Injection securely, without executing the comment and the malicious code that follows it.

Test Case 17: 🔄 Input Validation and Prepared Statements

Test Objective: Verify that the application utilizes input validation and prepared statements to prevent SQL Injection.

Test Steps:

1. Attempt SQL Injection attacks (various payloads) on both the SignUp and Login pages.
2. Monitor network traffic or logs to see if the application's input validation and prepared statements effectively block SQL Injection attempts.

Expected Result: The application should thwart all SQL Injection attacks through a combination of input validation and prepared statements.

Test Case 18: 💻 Database Error Handling

Test Objective: Examine how the application handles database errors resulting from SQL Injection.

Test Steps:

1. Inject a SQL Injection payload on both the SignUp and Login pages to provoke database errors.
2. Observe the application's error messages and behavior.

Expected Result: The application should provide generic error messages and not reveal specific database details to attackers.

Test Case 19: 🚫 Blocking SQL Keywords

Test Objective: Ensure the application blocks SQL keywords to prevent SQL Injection.

Test Steps:

1. Attempt to inject SQL keywords like SELECT, UNION, DELETE, etc., on both the SignUp and Login pages.
2. Check if the application effectively blocks or sanitizes these keywords.

Expected Result: The application should prevent SQL Injection by rejecting or neutralizing SQL keywords.

Test Case 20: 🔐 Password Hash Validation

Test Objective: Verify if the application securely hashes and validates passwords to mitigate SQL Injection attempts.

Test Steps:

1. Sign up with a valid username and password.
2. Attempt to log in with a valid username but an incorrect password (SQL Injection payload).
3. Observe the application's behavior.

Expected Result: The application should correctly hash and validate passwords, preventing unauthorized login attempts even with SQL Injection payloads.

Test Case 21: 🕵️♂️ Blind SQL Injection with Boolean-Based Logic

Test Objective: Detect vulnerabilities related to Blind SQL Injection using Boolean-Based logic in SignUp.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, input a Blind SQL Injection payload using Boolean-Based logic:' OR 1=1--' OR 1=2--

Expected Result: The application should prevent Blind SQL Injection attempts by properly validating input.

Test Case 22: 🛠️ Database Version Identification

Test Objective: Determine if it's possible to identify the database version through SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to identify the database version:' OR 1=1 UNION ALL SELECT @@version--

Expected Result: The application should block attempts to reveal database version information.

Test Case 23: 💾 Data Exfiltration via SQL Injection

Test Objective: Check if an attacker can exfiltrate sensitive data from the database through SQL Injection on the Login page.

Test Steps:

1. On the Login page, enter a legitimate username.
2. In the "Password" field, input a payload to retrieve sensitive data:' UNION ALL SELECT username, email, password FROM users--

Expected Result: The application should not allow unauthorized access to sensitive data through SQL Injection.

Test Case 24: 📁 Directory Traversal via SQL Injection

Test Objective: Investigate if the application is vulnerable to directory traversal through SQL Injection in SignUp.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to attempt directory traversal:' UNION ALL SELECT LOAD_FILE('/etc/passwd')--

Expected Result: The application should block directory traversal attempts and not allow access to unauthorized files.

Test Case 25: ⚡️ Cross-Site Scripting (XSS) via SQL Injection

Test Objective: Determine if SQL Injection on the SignUp page can lead to Cross-Site Scripting (XSS) vulnerabilities.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to trigger an XSS attack:John'"><script>alert('XSS')</script>--

Expected Result: The application should properly sanitize input to prevent XSS vulnerabilities arising from SQL Injection.

Test Case 26: 🧩 Polyglot SQL Injection

Test Objective: Explore vulnerabilities caused by Polyglot SQL Injection on both the SignUp and Login pages.

Test Steps:

1. On the SignUp page, enter valid credentials.
2. In the "Full Name" field, input a Polyglot payload:%' OR '1'='1'; --"; (SELECT @@version); --
3. On the Login page, enter a legitimate username.
4. In the "Password" field, input the same Polyglot payload from step 2.

Expected Result: The application should reject Polyglot SQL Injection attempts on both the SignUp and Login pages.

Test Case 27: 🕳️ Nested SQL Injection

Test Objective: Check if the application can withstand nested SQL Injection attempts on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a nested SQL Injection payload:John' AND (SELECT COUNT(*) FROM users WHERE username='admin')=1--

Expected Result: The application should block nested SQL Injection attempts and maintain its integrity.

Test Case 28: 🎭 Time-Based Blind SQL Injection on Login

Test Objective: Test for Time-Based Blind SQL Injection vulnerabilities on the Login page.

Test Steps:

1. On the Login page, enter a legitimate username.
2. In the "Password" field, input a Time-Based Blind Injection payload to check if the application delays responses based on true and false conditions:' OR IF(1=1, SLEEP(5), 0)--' OR IF(1=2, SLEEP(5), 0)--
3. Attempt to log in.

Expected Result: The application should not experience significant delays for legitimate input and should reject Time-Based Blind SQL Injection payloads.

Test Case 29: 🗃️ Testing Database Enumeration

Test Objective: Verify if an attacker can enumerate the database structure through SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to enumerate the database structure:' UNION ALL SELECT table_name, column_name, null FROM information_schema.columns--

Expected Result: The application should block attempts to enumerate the database structure.

Test Case 30: 🚧 Second-Order SQL Injection on Login

Test Objective: Investigate Second-Order SQL Injection by injecting malicious data during SignUp and then attempting to exploit it during Login.

Test Steps:

1. During SignUp, input a username like John'; -- and valid password.
2. Complete SignUp.
3. On the Login page, try logging in with the injected username from step 1.
4. Observe if the application executes SQL Injection during the Login attempt.

Expected Result: The application should properly sanitize and validate input, preventing Second-Order SQL Injection during the Login attempt.

Test Case 31: 💽 Out-of-Band SQL Injection

Test Objective: Detect vulnerabilities related to Out-of-Band SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to trigger Out-of-Band SQL Injection:' OR 1=1; SELECT pg_sleep(10); -- (for PostgreSQL)' OR 1=1; EXEC xp_cmdshell('ping 127.0.0.1'); -- (for SQL Server)
3. Monitor external systems for unusual activity.

Expected Result: The application should prevent Out-of-Band SQL Injection attempts and not trigger any unexpected external actions.

Test Case 32: 🌐 Remote Code Execution (RCE) via SQL Injection

Test Objective: Investigate if the application is susceptible to Remote Code Execution (RCE) via SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to trigger RCE:' UNION ALL SELECT '<?php phpinfo(); ?>', null, null INTO OUTFILE '/var/www/html/rce.php'--
3. Attempt to sign up.

Expected Result: The application should block attempts to execute malicious code and not allow unauthorized access to server files.

Test Case 33: 🔓 Authentication Bypass via SQL Injection

Test Objective: Check if it's possible to bypass authentication using SQL Injection on the Login page.

Test Steps:

1. On the Login page, enter a legitimate username.
2. In the "Password" field, attempt to bypass authentication using SQL Injection:' OR '1'='1'--admin' --

Expected Result: The application should not allow unauthorized access through SQL Injection and should require valid credentials for login.

Test Case 34: 🧬 Time-Based Blind SQL Injection with Payload Variation

Test Objective: Test for Time-Based Blind SQL Injection vulnerabilities on the SignUp page with variations in the payload.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, input Time-Based Blind Injection payloads with variations:' OR IF(1=1, SLEEP(5), 0)--' OR IF(1=2, SLEEP(5), 0)--' OR IF(1=1, SLEEP(2), 0)--' OR IF(1=2, SLEEP(2), 0)--
3. Attempt to sign up.

Expected Result: The application should not experience significant delays for legitimate input and should reject Time-Based Blind SQL Injection payloads, even with variations.

Test Case 35: 💼 Business Logic Vulnerabilities

Test Objective: Investigate if SQL Injection can manipulate business logic on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to manipulate business logic:' OR 1=1; UPDATE users SET isAdmin = 1 WHERE username = 'John';--
3. Attempt to sign up and verify if the user is registered as an admin.

Expected Result: The application should prevent manipulation of business logic through SQL Injection and maintain data integrity.

Test Case 36: 📁 Directory Listing and Traversal via SQL Injection

Test Objective: Test for directory listing and traversal vulnerabilities through SQL Injection on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to list or traverse directories:' UNION ALL SELECT null, null, null, null, null, LOAD_FILE('/var/www/html/')--' UNION ALL SELECT null, null, null, null, null, LOAD_FILE('../../../etc/passwd')--
3. Attempt to sign up.

Expected Result: The application should block directory listing and traversal attempts and not expose sensitive system information.

Test Case 37: 💾 Data Manipulation via SQL Injection

Test Objective: Verify if SQL Injection on the SignUp page can be used to manipulate data in the database.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a payload to manipulate data:' OR 1=1; UPDATE users SET password = 'NewPassword' WHERE username = 'John';--
3. Attempt to sign up and verify if the password for the user 'John' is changed.

Expected Result: The application should prevent data manipulation through SQL Injection and maintain data integrity.

Test Case 38: 📤 Data Exfiltration via Blind SQL Injection

Test Objective: Test for Blind SQL Injection vulnerabilities that can lead to data exfiltration on the SignUp page.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. In the "Full Name" field, inject a Blind SQL Injection payload to exfiltrate data:' OR IF(1=1, (SELECT username FROM users WHERE id=1), 0)--' OR IF(1=1, (SELECT email FROM users WHERE id=1), 0)--
3. Attempt to sign up.

Expected Result: The application should not allow data exfiltration through Blind SQL Injection and should properly sanitize input.

Test Case 39: 🔥 SQL Injection in User Input Fields

Test Objective: Check if SQL Injection vulnerabilities exist in user input fields apart from Full Name, such as Address or Profile Description.

Test Steps:

1. Enter valid credentials on the SignUp page.
2. Inject SQL Injection payloads in additional user input fields (e.g., Address, Profile Description) during SignUp.
3. Attempt to sign up.

Expected Result: The application should prevent SQL Injection in all user input fields and not execute malicious SQL queries.

Test Case 40: 💻 Multi-Step SQL Injection Attack

Test Objective: Investigate complex SQL Injection attacks that span multiple steps or pages of the application.

Test Steps:

1. During SignUp, input a payload in the "Full Name" field to store malicious data in the database.
2. Complete SignUp.
3. In a subsequent Login attempt, use SQL Injection to manipulate the application to retrieve or exploit the stored malicious data.

Expected Result: The application should maintain data integrity and prevent multi-step SQL Injection attacks.

Conclusion:

By employing these advanced test cases, we can bolster the security of our web applications against SQL Injection, ensuring they are fortified against even the most cunning attackers. Remember to always conduct ethical testing and have proper authorization before testing on production systems. Happy testing! 🌐🔒🧪